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Three pages held together by a pin in the top left hand corner. The first page is typed in black ink on off-white paper, with some details handwritten in pencil. The second page is handwritten in pencil on off-white paper, with some text typed in black ink. The third page is handwritten in pencil on off-white, blue ruled paper. A letter from E.I David to Mr J.O.Pearce regarding Powell Duffryn Power Stations. Loose within pink/peach card file with other documents relating to Middle Duffryn and Bargoed High Pressure Station.
